/**
 *  This file is part of OhSnap.
 *
 * 	Copyright (c) 2009 Gabriel Mendonça and Marcelo Machado
 * 
 *  OhSnap is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  OhSnap is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with OhSnap.  If not, see <http://www.gnu.org/licenses/>.
 *  
 */
package br.mm.ui;

import java.io.File;

import javax.swing.filechooser.FileFilter;

/**
 * @author machado
 * 
 */
public class MidiFilter extends FileFilter {

	public final static String MID = "mid";
	public final static String MIDI = "midi";

	public boolean accept(File f) {
		if (f.isDirectory()) {
			return true;
		}

		String extension = getExtension(f);
		if (extension != null) {
			if (extension.equals(MID) || extension.equals(MIDI)) {
				return true;
			} else {
				return false;
			}
		}

		return false;
	}

	public String getDescription() {
		return "Arquivos Mid";
	}

	/**
	 * Get the extension of a file.
	 */
	public String getExtension(File f) {
		String ext = null;
		String s = f.getName();
		int i = s.lastIndexOf('.');

		if (i > 0 && i < s.length() - 1) {
			ext = s.substring(i + 1).toLowerCase();
		}
		return ext;
	}
	
}
